The scene is indelible, iconic and forever unchanging. Wonderfully so. The images of ballplayers limbering up this week as spring training opens here in the Greater Phoenix area and throughout Florida herald the coming change of seasons. Gifted poets are endlessly evocative in its emotional pull. So, too, are less-gifted poets. Much of their muse centers on hope, specifically renewed hope. Cue the Royals, who officially open preparations for their 45th season Tuesday when pitchers and catchers shift from their current unofficial conditioning workouts. The infielders and outfielders formally join the mix on Friday. Spring games start a week later. This is the club’s most anticipated camp in more than a generation and comes flowered in the spring hope that an overhauled rotation just might bridge the longstanding chasm between what has been and what once was.